<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        .wait {
            height: 100px;
            width: 100%;
            position: absolute;
            top: 30%;
            background-color: greenyellow;
            display: none;
        }
    </style>
    <script src="../lib/jquery/jquery.js"></script>


</head>

<body>

    <div class="wait">

        加载中^^^^^

    </div>
    <script src="./ajaxjs.js"></script>
</body>

</html>